US1857453A - Tent-head fixture for inhalational therapy - Google Patents

Description

May 10, 1932- Y. HENDERSON ET AL TENT HEAD FIXTURE FOR INHALATIONAL THERAPY Filed NOV.22, v3.930

Patented May 10, 1932 UNITED STATES PATENTgj-QFFICE YANDELL HENDERSON, OIF NEW HAVEN, ANI)r HOWARD W. HAGGARD, F WOODIBVIB'IDGE,v

'l CONNECTICUT 't f TENT-HEAD FIXTURE FOR INHALATIONAL '.HERAPY` application mea November 22, 1930. seria; No. 497,379.

Our invention relates to a tent-head fixture for use in inhalational oxygentherapy, whether the oxygen be fused alone'or mixed with other gases (particularly carbonl diox "f ide) iny the treatment ofl pneumonia, as-y phyxia, and other disorders in which the respiration of air mixed with oxygen, or oxygen and other gases, is a therapeutic advantage, the object being to produce a-unitary 0 inhalational apparatusconstructed with particular reference to simplicity and compactness, convenience of transportation andoperation, installation without loss of time, and efficacy in use.

5 With these ends in view, our invention con# sists in an inhalational tent-head fixture chiefly characterized'by-` the installation of thev injector and the refrigerating means in it to form a unitarystructureto be transported, handled and operated as such.

Our invention further consists in an in halational tent-head fixture characterized as above and lhavingcertain details kof construction and combinationfof parts as will the claims.

In the accompanying drawings: Y

F l is a View in elevationf of our improved inhalational tent-head fixture' for 0 treating pneumonia, asphyxia, fand allied conditions, with portions of the tent broken away; f f

Fig. 2 is a plan view thereof; and

ing the use of ordinary water-ice.

In the particular embodiment of our yin-k vention herein shown and described, vthe inj ector consists of a threaded nozzlelO adjustably mounted in ayerticallyarranged tubular casing 11 toA which oxygen alone,` under pressure, or oxygenmixed withgother gases under pressure,risled'fro1n any lconvenient acoil 13. The injector-casing` 11 is lformed at its lowervend `with a flange 14. 'by means of which it is rigidly mounted upon Ithe closed,- fiat, upper end of [an upstanding, downwardly-opening, circular mixing-chamber 15 having in its said upper end a! central be hereinafter set forth and pointed'out in` Fig. 3 is a View of the head in vertical cen-V tral section on the line 3-3 of Fig. 1, show-fl source of supplyby a g`as-pipef124 comprising j Water-ice 21 fills the annular chamber surf rounding the mixing-chamber 1 5, kas-shown in F ig. 3.@v The -g'asepipe 12 is ylocatedwithin this chamber, upon the bottom of which its coil =13f rests and is thereforeV broughty into directcontact with the watereice l21, which is introduced into thefcontainer 2() through a removablecover 22 having ahandle 23 and a depending annular flange 24 Vfitting snugly l into a large circular'opening 25 formed in a horizontal rim 26 secured to the upperedge of the ice-container 20 and projecting in# wardly'and outwardlylover the same. The

outerv edge of' the said yrim 26 rests upon an annular flange 27turnedinwardly from the upper edge of the cylindrical body 28 Aofthe fixture, whereby the said ice-container 20-` is' suspended therein, there being sufl'icientdi'f-vr f ference between the vdiameter and depth of I the ice-container and body'to form an annularco'oling'chamber 29 between their sides' and a cooling-space 30 between their bottoms. For convenience, the ice-container is provided just within its upperfedge with swingingbail-like handle 31 'consisting of a heavy metal rod, the ends ofwhich are pivoted in brackets 32 located at opposite points within the container. When not in use, this handleiSsWung down intothe position in which it is s hown in Fig. 3. On the'removalof the1cover22 thehandle may readily be grasped for lifting the container'outof( the Risingcentrally within the mixing-cham-V ber 15 is a funnelv 33, the upper endlofwhich' is centered with respect to the-projecting lower end ofx the nozzle 1 0 of the injector,

while the flaring lower end of the funnel 33 opens downwardly into the tent 34 through a central opening 35 formed in the bottom of the body 28, the edges of the laring portion of the funnel' being secured as shown to the ,edges ofthe opening 35 as at 36.

Fory the admissionV of the expired air of the l patient from the tent 34 into the annular cooling-chamber 29, the body 28 has formed init ay circular band Vof air-portsBlr through which the expired air is drawn into the' saidV cooling-chamber k29, thence through the airspace 30, thence upwardY through a'n annular;

passage 38 between the Haring lower end of the funnel 33 and the lower end ofthe downwardly-opening mixing-chamber vwhich risescentrally within the ice-container of which itforms a part, suchI circulation of the expired airbeing induced! bythe draft created by the injector l() which discharges into the top of the mixing-chamber. 15.' The moisture carried by the expired air of the patient as thus circulated and cooled, conthe cup-likepad may be poured or., drawn off. or soaked up by aY sponge or'cloth.A 'The pa'd'39-also yprevents moistureY in the air exhaledby thefpatient from condensing upon.

' the lower surf-ace of the bottom ofthe body andV dropping uponthe face of the patient.v Y Y The tent, whichv may be vof any approved construction andI which is provided,A as usual, with one ormore observation-openings 40, is heldl away from the body 28j of the fixture 'so asxtoV providea freepassage 41 for' the expired' air in the tent into the port-hol`es 37v the body,by1a rectangularl frame 42 to whichtheuppergportion of the tent is secured. i Above theV said frame 42 the tent is provided'with an annular band 43 ofthe tent-cloth fitting 'snuglyaroundthe body at a point above'the saidfp'orts and clasped uponA thefbody by af band 44-f`ormed at "its-ends' with perforatedl ears 45-45- receiving a clamping-V fixture is suspended, as

" shown,. by three spaced brackets 47 secured tothe tOpL-Otthe'bOdyf, providing for the atTV Y tachment ofsprings48 secured to'afhorizontal "f suspension-bar 49, but the particular means:

o fsuspendingA our 4fixture ormsnopartf of` ourfinvention and may be variedA according" to convenience. Y

It will be seen from the Yii'oregoing-idescripf` tion that ,under-our invention-the injectorl and refrigerating-means, i. e., they ice-container, areinstalledwithin the tent-head fixture itn self,.the 'said tentfheadfbeing, in effect, a unitary structure.;V f

*ff 1 Y Oxygen alone, for oxygen mixed with another gas or gases (preferably carbon dioxide, which promotes deep breathing), according to the treatment indicated, is supplied through the gas-pipe l2 .from any convenient source of supply and under any desired pressure. In its passage through the pipe 172, the gasis cooled prior toits admission into the injector, from the nozzle l() of which it is sprayed into the upper endrof the mixingchamber and intol the `funnel 33", creating such a; suction as to draw the exhaled air of the patient from the tent 34 upwardthrough the'passage 41 and thence"through the ports into the cooling-chamber 29 where it ycomes in contact with the exterior surfaces or sides of the water-.icecontainer 20, thence downward into-the cooling-,space 30, where itis further cooled by Contact `with the bot- 'tomzof theuice-container -20`,fthence upward through the annular passage'38 around the" Haring lower end of. the funnel/3,3 into the mixing.-chamberl-,t where itisffurther cooledand drawn over the top ofthe funnel 33. and downwardV vthrough the same,z from which it is 'discharged in- -theorml of a breeze, `so to speak, into the 'face of the patient.\ A s the cooled and," therefore, driedor' dehydrated exhaled -air isdrawni intothe funnel, it is mixed with the gas from the .injector,the

'commin'gling of theair'andgas being continued in the funnel'upj to Ithe time ofthe discharge of vthe, mixture. therefrom. c

. -Bylocatingv the injector 'andrefrigeraty ing-1neans,l,whatev er their y (specific character and arrangement, within'the tent-headA proper,. the practice. 'of, inhalational Y oxygen therapy isgreatly simplied andmade Inuchj more'convenient thanwith prior devices, in which the injectionfmeans and refrigeratingmeans have been located exteriorto the tenthead and indirectly connected therewith,.such prior devices being clumsy totransport and manipulate and requiring much more space, often vbeing in the way ofaccess totthebedsideof the patient. v`

We would have it understood that in practicing our invention,fchanges may be made in the tenthead fixture herein shown and 'de-` scribed, without vdepartin'gfrom our essential invention,which :is characterized by making the inj ector. and refrigeratingfmeans Vorganic' 'features of the-fixtlqlre.-Y i w 1'. A- tent-'head'- ixtur #for inhalationaltherapy having rva body,' a removable 'ice-f container loca-ted therein, a mixing-chamber rising within" the saidvce-container, an in-` jector c'oordinatedfwith" theL said mixing'-i -ch'ambenmeans for supplying'gasto the' in- Y jector, andl aT unr'iely located Vwithin the mifxA ingchamber and opening downward through thehead, whereby thefexpired air is drawnv through the "head, and cooledthereinl and Ithence e ,into Athe Y g mixinghamber .and dis;-z

charged from the funnel, by the suction created by the said injector.

2. A tent-head fixture for inhalational therapy having a body provided with airports, an ice-container suspended within the body, from the sides and bottom of which it is separated by cooling-spaces, a mixingchamber surrounded by the ice-container and opening downward, an injector coordinated with the mixing-chamber, and means for supplying gas to the injector, whereby the expired air is drawn from the tent through the said ports into the said cooling-spaces and thence into the mixing-chamber, from which it is discharged, by the suction created by the injector.

3. A tent-head fixture for inhalational therapy having a body provided with ports, an ice-container suspended within the body, from the sides of which it is separated by a cooling-chamber, a mixing-chamber surrounded by the ice-container and communicating with the said cooling-chamber, an injector coordinated with the mixing-chamber, means for supplying gas to the injector, whereby the expired air is subjected to the action of ythe cooling-chamber and thence drawn into the mixing-chamber by the suction createdby the injector, and means for insulating the bottom of the body from the ice-container and cooling-chamber.

4. A tent-head fixture for inhalational therapy having a body provided with ports, a funnel rising within the center of the body and opening downwardly therethrough, an ice-container set within the body and smaller in diameter than the same to form an annularV cooling-chamber between them, a mixingchamber located within the ice-container and forming a part thereof, an injector mounted in the mixing-chamber, means for supplying gasto the injector, whereby the expired air is drawn through the said ports. into the cooling-chamberV and thence into the mixingchamber and funnel by the suction created by the injector.

5. A tent-head fixture for inhalational therapy having a body provided with airports, a funnel rising from the center of the body and opening downward therethrough, an ice-container located within the body and dimensioned for producing cooling-chambers between the sides and bottom of the same, a centrally-located mixing-chamber rising within the ice-container and carried thereby, an injector applied to the mixing-chamber into which the funnel rises for coaction with the injector, and a gas-pipe mounted in the ice-container, extending thereinto and connected with the injector, whereby the expired air is drawn by the suction created by the said injector from the tent suspended from the fixture-head through the said ports and cooling-chambers into the mixing-chamber and' funnel-,from which it is discharged upont-hek patient. v j fr 6. A tent-head fixture for inhalational therapy having a body provided with a series of air-ports, a funnel rising centrally, within the body,fan ice-container within the body withcooling-spaces between them, a. downn wardl-y-opening mixing-chamber risingcentrally within the ice-container and receiving the saidfunn'el, an injector mounted upon the top offv the mixing-chamber, and means for supplying gas to 4theinjector,- .whereby the draft produced by the injector draws the expired air through'the ports of the body and through the said cooling-spaces into the mix-` ing-chamber and thence into the funnel, from.kk

which it is expelled upon the patient. 7. A tent-headA fixture .for inhalational therapy having a body provided with airports, a centrally-located ydownwardly-,openwith the interior of the said tent for removing air therefrom and reintroducing the same thereinto; refrigerating-means located in the said head and associated with the said air-circulatingpassage inthe tent-head for cooling air passing therethrough; and a gasinjector opening into the said air-circulating passage in the said tent-head in such manner as to cause a forced draft therethrough to remove air from the said tent for being cooled by the said refrigerating-means and to force the now cooled air back into said tent, plus an admixture of gas from the said gas-injector. v

9. In an apparatus for inhalational therapy, the combination with a tent-head; of a tent suspended therefrom; an air-circulating passage provided in the said head and comcooledfwby? the ysaid refrigerating-means and returned, plus an admiXture of gas into the 1 tent; l

10. In anapparatus for inhalational therapy, the combination With a tent-head; of a tent suspended therefrom; anf air-circulating passage provided in the said head and communicating at its-respective'opposite ends Withtherinterior of the saidltent'forV removing air therefrom and reintroducng the sameV thereinto; refrigerating-means. located inthe saidihead andv associated with the said air-circulating passage in the tent-head for cooling airvpassing therethrough; aV gas-injector opening ntothe said air-circulating passage in the said tentshead in such manner as to cause a forced draft therethrough to ref .movecair from'thesaid tent for being cooled by thesaid refrgerating-means and to force the'now cooled air back into said tent, plus aniadmixture'of gas from thev said gas-injector; and means for yinsulating the bottom ofthe tent-head, whereby the condensation of' moisture thereupon is prevented.l

In testimony whereof, We have signed this speci'cation'.

' YANDELL-YHENDERSON.

- HOWARD V7. HAGGARD.

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